Briefcase



FIG. 1 is a perspective view of a briefcase embodying our new design;

FIG. 2 is a left side profile view of the briefcase of FIG. 1;

FIG. 3 is a right side profile view of the briefcase of FIG. 1;

FIG. 4 is a front elevational view of the briefcase of FIG. 1;

FIG. 5 is a rear elevational view of the briefcase of FIG. 1;

FIG. 6 is a top plan view of the briefcase of FIG. 1;

FIG. 7 is a bottom plan view of the briefcase of FIG. 1;

FIG. 8 is a perspective view of an alternative embodiment of a briefcase embodying our new design, with unclaimed portions of the briefcase shown in broken lines;

FIG. 9 is a left side profile view of the briefcase of FIG. 8;

FIG. 10 is a right side profile view of the briefcase of FIG. 8;

FIG. 11 is a front elevational view of the briefcase of FIG. 8;

FIG. 12 is a rear elevational view of the briefcase of FIG. 8;

FIG. 13 is a top plan view of the briefcase of FIG. 8; and,

FIG. 14 is a bottom plan view of the briefcase of FIG. 8. 

The ornamental design for a briefcase, as shown and described. 